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Finding the Fourth Proportional to 656.58, 991.14 and 652.94

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Solution

The fourth proportional to 656.58, 991.14 and 652.94 is: 985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.58 : 991.14 = 652.94 : x
  2. Step 2: Convert to fraction form
    656.58/991.14 = 652.94/x
  3. Step 3: Cross multiply
    656.58x = 991.14 × 652.94
  4. Step 4: Simplify right side
    656.58x = 647,150.00
  5. Step 5: Solve for x
    x = 647,150.00/656.58
  6. Step 6: Final answer
    x = 985.64

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.